Indianapolis
Indiana, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Indianapolis, IN

The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
The magnificent Monument Circle in Indianapolis, Indiana with the surrounding cityscape, and a perfect blue night sky
October, like September, in Indianapolis, Indiana, is another comfortable autumn month, with average temperature ranging between min 47.3°F (8.5°C) and max 63.1°F (17.3°C).

Temperature

In Indianapolis, the average high-temperature in October drops, from a moderately hot 75.9°F (24.4°C) in September, to a comfortable 63.1°F (17.3°C). The average low-temperature, in Indianapolis, is 47.3°F (8.5°C).

Humidity

October is the least humid month, with an average relative humidity of 73%.

Rainfall

In Indianapolis, Indiana, during October, the rain falls for 11.1 days and regularly aggregates up to 1.46" (37mm) of precipitation. Throughout the year, there are 146.4 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Indianapolis.

Daylight

The average length of the day in Indianapolis, Indiana, is 11.1h.

Sunshine

In Indianapolis, the average sunshine in October is 6.8h.

UV index

Months with the lowest UV index in Indianapolis, Indiana, are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in October in Indianapolis?

In October, in Indianapolis, Indiana, the average high-temperature is 63.1°F (17.3°C), and the average low-temperature is 47.3°F (8.5°C).

What is the least humid month in Indianapolis?

With an average relative humidity of 73%, October is the least humid month.

What is the average humidity in October in Indianapolis?

In October, the average relative humidity in Indianapolis, Indiana, is 73%.

How many days does it rain in October in Indianapolis?

In Indianapolis, in October, it is raining for 11.1 days, with typically 1.46" (37mm) of accumulated precipitation.

Does it snow in Indianapolis in October?

In Indianapolis, Indiana, in October, it doesn't snow. In November, it regularly snows.

When it does not snow in Indianapolis?

In Indianapolis, Indiana, snow does not fall in May through October.

How many hours of daylight does Indianapolis have in October?

In October, the average length of the day in Indianapolis is 11.1h.

How long on average sun shines in October in Indianapolis?

In Indianapolis, the average sunshine in October is 6.8h.

When is the lowest UV index in Indianapolis?

Months with the lowest UV index in Indianapolis are January, February, October through December, with an average maximum UV index of 2.

What is the UV index reading in October in Indianapolis?

In October, the average daily maximum UV index in Indianapolis is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in October - Indianapolis, IN
  • Average high temperature in October: 17.3°C

The warmest month (with the highest average high temperature) is July (27.8°C).
The month with the lowest average high temperature is January (0.8°C).

  • Average low temperature in October: 8.5°C

The month with the highest average low temperature is July (19°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

Average humidity in October - Indianapolis, IN
  • Average humidity in October: 73%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).

Average rainfall in October - Indianapolis, IN
  • Average rainfall in October: 37mm

The wettest month (with the highest rainfall) is May (68mm).
The driest month (with the lowest rainfall) is February (31mm).

Average rainfall days in October - Indianapolis, IN
  • Average rainfall days in October: 11.1 days

The month with the highest number of rainy days is May (17.6 days).
The month with the lowest number of rainy days is February (6.8 days).

Average snowfall in October - Indianapolis, IN
  • Average snowfall in October: 0mm

The month with the highest snowfall is December (58mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in October - Indianapolis, IN
  • Average snowfall days in October: 0.2 days

The month with the highest number of snowfall days is January (7.9 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in October / Average sunshine in October - Indianapolis, IN
  • Average daylight in October: 11.1h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in October: 6.8h

The month with most sunshine is July (Average sunshine: 10.3h).
The month with least sunshine is January (Average sunshine: 4.1h).

Average UV index in October - Indianapolis, IN
  • Average UV index in October: 2

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, October, November and December (UV index 2).